unstable

adj

1.
lacking stability or fixity or firmness
ordless slidder swear tickle unsicker walt
Antonym:
stable
Derived from:
unstableness
2.
highly or violently reactive
Derived from:
unstableness
3.
affording no ease or reassurance
precarious
Derived from:
unstableness
4.
suffering from severe mental illness
mentally ill unsound
Derived from:
unstableness
5.
disposed to psychological variability
Derived from:
unstableness
6.
subject to change; variable
fluid